Azeotrope mixture cannot be separate by .............

Explanation

**Step-by-Step Solution:**

1. **Understanding Azeotropes**: An azeotropic mixture is a type of binary mixture that has a constant boiling point and composition in both the liquid and vapor phases. This means that when the mixture is boiled, it vaporizes at a specific temperature without changing its composition.

2. **Characteristics of Azeotropes**: Azeotropes do not exhibit a change in composition upon boiling. This is a key characteristic that differentiates them from regular mixtures, where components can be separated based on their different boiling points.

3. **Separation Methods**: The common method for separating liquid mixtures is fractional distillation, which relies on the differences in boiling points of the components. In fractional distillation, components with lower boiling points vaporize first and can be collected separately.

...